The ETC ECOI is an Echo Contact Output Interface designed for distributed lighting control integration where the Echo system needs to communicate with external equipment. Installed on a DIN rail, it provides four relay outputs that can be used to trigger third-party devices based on system events such as zone activity, preset changes, occupancy status, or other control conditions within an Echo environment.

For integrators working in theaters, hospitality venues, healthcare facilities, conference rooms, lobbies, retail spaces, and houses of worship, the ECOI supports straightforward coordination between lighting control and building subsystems. It connects to the EchoConnect control network using topology-free two-wire wiring and is programmable through the EchoAccess mobile app, helping streamline commissioning in distributed system installations.

The unit is built in a compact DIN enclosure with clearly indicated status and power LEDs, screw terminal wiring, and relay connections for normally open, normally closed, and common operation. When a project calls for Echo-based control status to initiate external actions, the ECOI offers a practical interface point within the ETC Echo platform.